(19)

(11)

EP 1 828 295 A1

(12)

(43) Date of publication: 05.09.2007 Bulletin 2007/36 (21) Application number: 04822462.0 (22) Date of filing: 23.11.2004

(51) International Patent Classification (IPC):  C08K 3/34(2006.01) C08L 67/02(2006.01) C08K 9/04(2006.01) B65D 1/02(2006.01) (86) International application number: PCT/EP2004/013286 (87) International publication number: WO 2006/056217 (01.06.2006 Gazette 2006/22)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LU MC NL PL PT RO SE SI SK TR (71) Applicant: Pirelli & C. S.p.A. 20123 Milano (IT)	(72) Inventors: CARRUS, Antonio I-20126 Milano (IT) CIPRIANI, Chiara I-20126 Milano (IT) GRASSI, Lisa I-20126 Milano (IT) TESTI, Stefano I-20126 Milano (IT) CASTELLANI, Luca I-20126 Milano (IT) (74) Representative: Giannesi, Pier Giovanni  Pirelli & C. S.p.A. Industrial Property Department Viale Sarca, 222 20126 Milan 20126 Milan (IT)